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Bactericidal composition containing pyrimorph and boscalid

A technology containing pyrimorph and boscalid is applied in the field of pesticides to achieve the effects of small dosage, high control efficiency and delaying the emergence of bacterial resistance

Inactive Publication Date: 2014-07-16
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no relevant reports on the compounding of pyrimorph and boscalid at home and abroad.

Method used

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  • Bactericidal composition containing pyrimorph and boscalid
  • Bactericidal composition containing pyrimorph and boscalid
  • Bactericidal composition containing pyrimorph and boscalid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 Indoor toxicity test of pyrimorph and boscalid against rice blight.

[0029] The effective inhibitory concentration range of each agent was determined by pre-test, and clear water was set as control. Refer to the "Pesticide Indoor Bioassay Test Guidelines for Fungicides", and use the mycelial growth rate method to determine the toxicity of the pesticides to the mycelial growth of R. solani. After 72 hours, the colony diameter was measured by the cross method, and the net growth and mycelial growth inhibition rate of each treatment were calculated.

[0030] Net growth (mm) = measured colony diameter - 5

[0031]

[0032] The mycelia growth inhibition rate is converted into a probability value (y), and the concentration of the medicinal solution (μg / mL) is converted into a logarithmic value (x), and the toxicity regression equation (y=a+bx) is obtained by the least squares method, and by This calculates the EC for each agent 50 value. At the same time, ac...

Embodiment 260

[0042] Embodiment 260% pyrimorph · boscalid wettable powder

[0043] 48% pyrimorph, 12% boscalid, 5% lignosulfonate, 3% sodium lauryl sulfate, 2% saponin powder, 5% diatomaceous earth, 25% kaolin, the mixture is air-flow Pulverize to obtain 60% pyrimorph · boscalid wettable powder.

Embodiment 342

[0044] Embodiment 342% pyrimorph · boscalid wettable powder

[0045] 14% of pyrimorph, 28% of boscalid, 5% of polycarboxylate, 3% of sodium lauryl sulfate, 10% of white carbon black, 40% of bentonite, the mixture is jet milled to obtain 40% of Pyromorph · boscalid wettable powder.

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PUM

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Abstract

The invention discloses a bactericidal composition containing pyrimorph and boscalid, and belongs to the technical field of pesticides. The weight ratio of pyrimorph to boscalid, which serve as effective active ingredients, is 1:30 to 30:1. The effective active ingredients, namely pyrimorph and boscalid, are compounded to use, and due to different bactericidal mechanisms of the two ingredients, the two ingredients generate no contradiction if being mixed and have a good synergistic effect within a certain range when being compounded. Additives and fillers are added into the active ingredients to prepare wettable powder, water dispersible granules and suspension agents. The bactericidal composition is mainly used for preventing and treating oomycetes diseases of vegetables and fruit trees, and can be used for delaying the generation of pathogen resistance, and the production cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of pesticides, in particular to a bactericidal composition containing pyrimorph and boscalid. Background technique [0002] Oomycete is a serious plant pathogen in agricultural production. The diseases caused by oomycete account for about 20% of vegetable diseases, and can cause a variety of plant diseases, such as downy mildew and disease etc. Oomycetes have the characteristics of short generation, large sporulation, short incubation period, many times of infection, strong damage to host plants, and fast epidemic speed. Oomycete disease occurs widely in all parts of the country, which can cause a 10% to 30% reduction in vegetable production, and in severe cases, an 80% reduction in production, or even extinction. Chemical control agents for oomycetes mainly include protective fungicides and systemic fungicides, such as carbendazim, chlorothalonil, metalaxyl and dimethomorph. However, the long-term and la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/84A01P3/00A01N43/40
Inventor 肖玉梅覃兆海李红吴燕华万川
Owner CHINA AGRI UNIV
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